Can you type out the specific change you’re referring to? I am not certain.
Here’s the current GIRM
62. After the reading that immediately precedes the Gospel, the Alleluia or another chant indicated by the rubrics is sung, as required by the liturgical season. An acclamation of this kind constitutes a rite or act in itself, by which the assembly of the faithful welcomes and greets the Lord who is about to speak to them in the Gospel and professes their faith by means of the chant. It is sung by all while standing and is led by the choir or a cantor, being repeated if this is appropriate. The verse, however, is sung either by the choir or by the cantor.
The Alleluia is sung in every season other than Lent. The verses are taken from the Lectionary or the Graduale.
During Lent, in place of the Alleluia, the verse before the Gospel is sung, as indicated in the Lectionary. It is also permissible to sing another psalm or tract, as found in the Graduale.
The older GIRM gave the option of singing or saying, but apparently the new one does not, and also apparently, the Lectionary instruction (quoted in an earlier post here) likewise removes that option.
I’m careful to say “apparently” because the original Latin (also quoted) does say “may be omitted” (possunt) not “is omitted” (est).
